Created attachment 419592 [details, diff] patch to solve this bug The patch included in portage has several issues: 1. formatting is broken, e.g. because of missing "\n" 2. the option -b shows wrong/incomplete instructions 3. the wording is inconsistent Btw., the option -q has no description overall. A patch is attached to solve points 1 - 3 basically.
[master a7136e6b9a6] mail-filter/libdkim: Fix patch (#568632 by Kai Peter) 5 files changed, 168 insertions(+), 28 deletions(-) create mode 100644 mail-filter/libdkim/files/libdkim-extra-options-r1.patch create mode 100644 mail-filter/libdkim/libdkim-1.0.21-r4.ebuild